What is network?

Today we live in the digital age. And at this time, knowing what the network is a very important thing for us. 

Because, behind this digital age of today, the Network has a great contribution. As a result of which, today's world has become so advanced. Suppose you think back to the earlier days.

So it was very difficult to share any necessary information at that time. Because, in those times, the only means to reach any useful information from one place to another was by letter. Which was very time-consuming and sometimes failed to reach the destination.

However, modern science has worked constantly to save the world from this problem. And thanks to their efforts, we can use the network today. Using which I can exchange any kind of information from one end of the world to the other in just a few moments.

And in today's article, I will discuss that. Today you will learn about various things about networks. For example, what is a network (Network in Bangla), what is a computer network, what are the types of networks, and how are networks made?

So let's go straight back to the main topic.

What is a network?

What is Network – If we say this matter simply, then we will say when one or more computers are connected to create a connection.

Then the connection method is called network (Network). So now you may be wondering how to connect a computer with another computer. –

Therefore, the matter needs to be discussed a little more simply. Two computers or two hundred thousand computers can be connected to make this connection. However, these connected computers are called nodes in one word.

And Node plays a very important role to manage a network properly. And the main task of this network is to share data. Because it basically shares data through different types of devices. For example, Router, Hub, Modem etc.

What is computer network?

In the discussion discussed above, you learned about what is a network. So now the question may arise in your mind, what is a computer network?

Because, the topic is about the network, it is also necessary to know the details about Computer Network. So let's find out about it now. Honestly, when you know what network is this connection Then you will not need to know the connection of computer network separately.

Because, as you already know, Node is required to prepare network connections. So when multiple computers will be connected through this node. Then he will simply be called a server. The work of this server is to collect the data from other computers and send those data to another computer when needed.

 And here are the work processes. All those processes together are called computer networks.

What is the name of the world's first computer network?

After learning about what is network and what is computer network, now I will share an interesting topic with you. That is, what is the name of the world's first computer network

So let's take a little idea about this general knowledge. By doing this you will know an additional thing. Needless to say, the name of the first computer network invented in the world was "ARPANET". Yes!

It is the first computer network created in our world. Laege Scale, General Purpose, Computer Network existed inside it.

On October 29, 1969, the world's first message was sent through Node to Node to ensure communication between one computer and another computer.

And the text in that message is "LOGIN".

What are the types of computer networks?

Actually there are many types of networks. Basically it will depend on the location, size and total number of computers being connected together to make a connection.

So the network is divided into several parts. For example,

• PAN (Personal Area Network)
• HAN (Home Area Network)
• LAN (Local Area Network) 
• WAN (Wide Area Network) 
• MAN (Metropolitan Area Network)

 Above I have talked about total 5 types of networks. Now let's discuss in detail about these 5 Kind Of Network. Then it will be easier for you to understand.

01 | PAN (Personal Area Network)

Networking methods are limited. That Networking System is called PAN. ie, Personal Area Network. Such networks are generally used for private purposes.

Which is very limited in terms of range. The range of this Personal Area Network is only 10 meters. Which can be used to exchange data between computers, smartphones and tablets.

02 | HAN (Home Area Network)

When the network is extended over a certain area, that network connection is called HAN. Now this spacious area can be your own home or even your office court.

And through this Home Area Network (HAN) you can transfer data to your own mobile, computer, printer etc personal devices.

03 | LAN (Local Area Network)

When a network connection is provided within a certain range. Then those types of connections are called, LAN means, Local Area Connection.

Such network connections are usually limited to a specific office, court, school, college. However, such Local Area Networks are larger or smaller depending on the location. In fact, the extent of it will depend on your needs.

04 | WAN (Wide Area Network)

When network connections are to be provided over a wide area over a large area. Then that type of network will be called, WAN i.e., Wide Area Network. However, this WAN can be connected separately, that is, Wide Area Network is the junction of various small networks.

Today there are different types of WAN networks such as public pocket networks, large corporate networks, etc.

05 | MAN (Metropolitan Area Network)

A slightly larger network connection than a LAN network is called MAN. MAN plays a very effective role in providing connectivity between computers spread across an entire city.

Surprisingly, Metropolitan Area Network can cover network connections from 10 km to 100 km. Another thing to be aware of is that Metropolitan Area Networks are used to create any major network connections.

How is the network created?

At the beginning of the article, you learned that a network is made up of one or more computers. So if you just connect multiple computers, no network will be created.

Rather, it requires some special elements. Now I will introduce them to you.

So let's discuss them clearly.

01 | Sender

Sender plays the most important role in building a network. Because, when you go to transfer any of your necessary data to another place. That's when you need your network. So it can be said that Sender is the data which is sent from one device to another device through the network.

02 | Receiver

Receiver has many contribution in network connection. Because you only send the data but the person you send the data to does not receive the data. But that data will not be useful So it can be said that the receiver is the device that waits to receive the sent data.

03 | Message

When you send data from one computer to another computer. For example, you need any Text, Documents, Video etc. So these data should be sent mainly in the form of messages. Because of which this sending data is called message.

04 | Protocol

One computer device can be easily connected to another computer device. But if you want to establish communication between these two types of devices. Then the name that comes at the beginning of all, that is Protocol. It basically establishes the connection between Sender and Receiver. This makes it a much more important part.

05 | Transmission Media

If there is no transmission media in the network connection. Then it will not be possible to transfer data from one device to another. Due to which transmission media is required to transfer data.

Nowadays you can see different types of Transmission Media.

For example, Wires, Cable, Optical Fiber etc.

So I discussed above how a network is actually built. Hope you got a clear idea about networking.

So now you have to know what are the functions of the network. Now let's know about it in detail.

What is the function of the network?

From the above discussion you have come to know in detail about what and how many types of networks. So now you need to know about network working. Because, I have said something above that Network has a great contribution behind today's developed world. So let's now discuss in detail about What do network do.

We can share the information we need through the network. For example, we can easily communicate from any part of the world through Email, Message, Video Call very quickly.

We all have various useful files or documents. So these files need to be transferred at various times.

And in real life it takes a lot of time to do this. But thanks to the network connection we can do these things very quickly.

You may have heard the name software or program. So you can do these tasks very quickly through remote system these days.

Those of us who use the Internet, accumulate various types of data. Access is needed to view and edit these data at various times.

And we can do this work through network connection.

Basically what we can do through network connection. 

Those advantages have been discussed above. And these are the main functions of the network. 

What are the different devices used in the network?

When a network is created, a variety of other devices are required for the network connection to work successfully. And the network is created by combining all these devices. And we can use them to move our data from one place to another.

So the thing to know is what those devices are.

• Computer
• server
• mainframe
• Smartphone
• tablets
• PDA's
• the camera
• printer
• fax
• Firewalls
• the bridge
• Repeater
• switch
• Hubs 
• router 
• console 

We have discussed the devices that are needed to build a network. Apart from these, many other types of devices are connected. But the original devices are mentioned above.

What is network protocol?

Just as you came to know what is network, you also need to know what is network protocol. Because, a special device of a network is Protocol. That is why it is very important for you to know what network protocol is.

So let's get to know about it in detail. See, just connecting one computer to another does not create a network. Because, even after this addition, various other functions have to be performed.

For example, one of those functions is communication. Without which the network will never achieve self-sufficiency.

Also the rules that govern a networking system. In the language of networking, those principles are called protocols.

Below are the names of some Network Protocols:

• TCP
• IP
• IPX/SPX 
• NetBEUI
• HTTP
• FTP

What you see above are basically the names of different types of network protocols.

What is the purpose of the network?

We know from the above discussion that network is formed by connecting two or more computers. And the main purpose of adding this computer is to transfer the resources I need.

And thanks to the network, we can move those resources from one place to the other end of the world very quickly.

What is a private network?

When you establish a network as a sole proprietorship. Then that type of network is called a private network.

The security of such networks is much better. But the security is very good but the traffic is very less.

What is public network?

When a network is created for the general It is called Public Network. Basically it is open to all people.

And if a person goes into that area then they can use that network.

Let's talk about network

How important the network is playing in the developed world. That has been discussed in detail in today's article. Hope you have understood well what is today's network. And stay with FactZon.Com to know all such unknown things in simple language.